Trolley retriever



Qci. 25, 1927. .1,646,585

, J. w. HuRsT.

TROLLEY RETRIEVER Filed March 8. 1926 22 /A/rf/vrof,

v Patented Oct-l 215i, 129727. Y y y h 1 y Y l i' UN ,TES f *Pi-v Tg1 JorIN'WEsTLEYHURST, o F MIN'NEAEQLIsZ- MINiuEsOTAV TROLLEY RETRIEERQ 4Appncatnm ined Maren s,`1926.-'- Sel-vial No- 52,355.

' My'inyention relates t0 Holley .TQlSiVQTS Which is formed a bearing' Sleve `2Ol`mmilnti `i for electric cars and the likeV and has ifo'rr its ed on thev shaft and supportgthg drum-'6 y object to improve the saniein-the lseveral .therefroml for rotation Within thedruin .I5

" ;V lparticulars hereinafter noted.. fandinrespec't thereto. Formed with "the 6'()V l" .ing `the trolley from the trolley wire and relativelyl heavy Wouljdyoled Sprihgfgghag 5 lAs is 'Well known, standard yelectric cars Open end 0f the.dlllrlflGish- ,en outwardly and *have trolleys arranged! to run .on trolley' radially extended annular flange, 21 that 1 wires and arev yieldinglyheld in 4Contact `closes .the open end'ohf the drum 5.and`has therewith, and which ltrolleys have ropes at# formed in "its yperiphery a 'plurality .of Acirtached near their free endsvfor use in pull- `lculnferentially spaced lock notches 22. QA 6,-"

for yplacingthesaine thereon.' Such trolley `Oneof its .ends anchored i0 @PagiQf-lseclllfd 15:

ropes are usually attachedto retrievers on '60 the bushlngl and its *other* end atthe bodies of4 the' cars. j The purpos'eof a taehed to saiddrurn forv rotatingthe. saine.

7 vretriever is'to yieldingly take up slack in Between the drulnsand'@ .isgafrelat'iyelym 2" and from tearing' "downth'e I'trolley' .Wire orl gagement with anyone 'of the locknotches cally Wind up Athe trolley ro'pe to hold the Gnd attached to the .dUmfGn Y .trolley down and prevent thel'saine from 'bel A dog .26. pivoted to ,the easing ,7 lig mf.r ing dan'iaged by swinging hack and forth .ranged ylo bemniovedinto interlocking'en-y the trolley wire the retriever'will automati- S ends attached tothe drumbanditSfQthrj--- itssupporting members. A t0 hold the dfllm;lgfnlmttml,llidef''f Y To the''alom/eend,v he invention consists the action ,of thel springv 23. l/Yhen-,th'efdlum of the noveldevices and"combinations oflde Gils thus locked, thesameybecornes hase the'claims. 1 thedruin .mgasloffljtsflagegl :they ,In thefacconipanyingdrawings, which .SPIlpg 23 .be .placed` under thedesired i illustrateithe inventionflike charactersdndijtenSlOn andlieldnwhere slet by the, `(1%); 276..l l

cate like parts throughoutthe severalyiews. They function xof Spring 23,. when re- Referring vtofthe drawings: 'f leased hyt'he inovementlof thefdog 26,0111; 55

.Y 30 Fig. 1 isV :1 -view fp'nmpany l.inf-Seiztciri ef engagement*Witlltheepeetvelockieofh taken on they line ill- A. o'fFigpQ'; u V2 2, iS to? rotate'the 5 and yWind y 'Fig-'2 isa View `principally Evin section Vwl'ley rope v8 thereon' Whenqthe ,trollyvigo` taken on thelin'e'Zf-Q of Fig. 1 `and also AWhlcjhfthe rope is.attached,juinpsgthe'trolley l i Showing l Wiringdiagl-am; and f Wire on rwhich it runsuand therehydraws the im 35 'Y Fig. 3 is a fragmentary View iwith' some lOlley ClOWn `below said Wire. Normally/Che.

vices hereinafter ,described and denedv in 0f resistance forth@ .spring 25.'. By rotating S0 Y' :parts sectioned onthe'lin'e B-fB of Fig. 2l Cllun'l v5 is fr-eer to rotate in' respectiol ythe --tively,' outer and Ainner ,concentricdrums in -fS-to. :rotate said drum 5 tov-takeu`p-the Slack' a tivo-part casing? adapted tolhe secured the rope 8. flfhetensiodn of thespringZ v:- m to the'body 'of a' caror other support.v A 1s 4such tliatthere islnotendencytofpulll the l trolley rope 8 enters the casing4r througha llOlley'from theitrolleyvwireand' Whnphe bossed opening) andfis VWound onit'he drum trolley moves upryardrffhe 0151011 thereof will o www@ its peripheral 'franges `io and at- @nwlnd'thewrere etree #hef-drum agent l ltachedthereto'at 11. @neend of'thefdruni` thetensionofthe.springfg j. v me i -45'f5is closed bya head .12', and dianieti'ically TO 'automatically centree-tithe dL-.um I5v to formed with said head is a shaft 13thateX- the, drinn aundery the rotationfof `the (l1-Mmy tends axially throughsaid'druin. lntegrlally V6 tofwindtherope 8f on thjedrnin mvldker l --formediinthe druinl head 12 at' the adjacent the actionof the spring g-fwhensajddmm nion 14 jOurnalQdin-a'huh 15 formed with pivoted to the inner'gdrurn `head 119L a pair' 'endlof the' shaft 13 is .a short "heavy trun- 6l has been. released yloy thedogsithere is 105.' i

the casing 7. The other'endy of the'v shaft of dogs 27 arrangedtofbefthrown ontwardf *y 13 is journaled in a bushing; 16 mounted in a undergcentrifugal force 'to engage internal -hiilo 17 forrned' with the casi'ngY and secured lool; notches forniedjin 7.the(fdmm head 19h i 1 thereto by a Screw 18. Y v It will be hoted that the drum'head lliis 1.10k i 555 VThe end of the drum 6 adjacent to the recessed at 28. coiled sgring 29 is mount-j drum head 12 is closed by a :head 19 with ed in apocket 1n the casing?, engagesth@ dog 26 and is under tension to move the same out of the lock notch 22'with which it engages.

tainer in the form of an ai'mature 34 Secured to the dog 26 in bell crank arrangement and a magnet 35. One ofthe wires 36 of the circuit for the magnet 35 is connected to `the trolley circuit 33 and has interposed therein a relay 37, and the other wire thereoic leads to the rail or ground 31. y y

" The magnet 35 is constantly energized as long as the trolley 32 is in Contact with the trolley wire and the energized magnet holds the armature 34 thereon with the dog 26 interlocked` with one ot the lock Vnotches 22. In cas-e the trolleyV 32 should jump the trolley wire 3() or be pulled therefrom bythe rope 8 the magnet 35 will .be de-energized by the breaking of the trolley circuit 33 and release the armature 34. Upon the releasing of the armature 34 the spring 29 will move the dog 26 outv of the lock notch 22 with which it is interlocked and thereby release the wound spring 23 which rotates the drum 6. Under the rotation oi the drum 6 the dogs 27 are drawn outward by centrifugal force, engage the lock notches 28 and thereby connect the drum 5 to the drum 6 for common rotation therewith. Under the rotation of the ldrum 5 the rope i 8 is wound on the drum 5 and willhold the trolley down.

To replace the trolley 32 on the wire 30 the rope 8 is manually pulled from vthe casing 7 which unwinds the same from the drum 5 and thereby rewinds the spring 23 and again puts the same under tension. Vhen the trolley 32 is again on the trolley wire the magnet 35 is energized, draws the armature 34 thereon, which in turn moves the lock dog 26 into one of the lock notches 22.

To lhold the -lock dog 26 interloc'ked with one ,of the lock notches 22 when the magnet 35 is ie-energized there is pivoted to a bracket on said magnet a latch 38 arrangedv to be turned into interlocking engagement with the free end of the magnet 35, as shown by full lines in Fig. 2.

What Iolaim is:

p LA trolle retriever including -adrinn, a cable attac ed to the drum, power means 2. The structure delinedin claimA` 1 in which the armature of said electromagnetic means kis carried by the dog and in which' the latch is operative on said armature.

3. A trolley retriever including aca-sing, inner and outer relatively rotatable drums, the form-er within the latter, a cable at-I tached to the outer drinn, a spring for rotate ing the inner drum, a dog normally holding vthe inner drinn with its spring under tension,

means tending to release the dog, aclutch for automatically connecting the outer drum to the inner drum when said inner drum is released by the dog, and a second spring for rotating the outer` drum to take up slack in the cable, in combination with an electromagnetic retainer Jor'holdingv the dog oper- I ative, said retainer being connected to and normally energized by the trolley circuit and` operative to release theV dog when deenetrgized by the breaking oithe trolley circui 4. A trolley retriever including a casing, inner and outer relatively rotatable drums, avcable attached-tov the outer drum, a wound spring attached to the casing and operative Von the vinner drum to rotate the same, said inner drum having an annular lock vflange with a notched periphery,a dogcooperating with the notched periphery of the lock :flange to hold'the spring wound, a spring tending to release the dog, a centrifugal clutch for connecting the outer drum tothe inner drum, a .wound spring connectingthe outer drum to the inner drum for operatinow said outer drum to take up slack in th cable,and an electromagnetic retain-er forv the dog including an armature on the dog in i bell crank arrangement. said yretainer being connected to and normally energized by the trolley circuit to release said dog when deenetrgized by the breaking of the trolleyfcircui l v v 5. The structure defined in claim 4 in further combination with a latch Yon the casing arranged -to engage the said armature and hold the dog operative.

In testimony whereof I aHiX mysignature.

i JOHN wnsTLnY Hunsr. 

